Add more relations.
Output tree continuation only if there are more nodes to print.
Do dependency resolution only once per request.
Support Comparable.
Support growing tree display horizontally to reduce space.
Output dependency tree sorted by name.
Extract tree symbols to variables.
Draw tree graphically.
Merge branch 'develop' into feature/edge-contraction

Conflicts:
	src/main/java/se/intem/web/taglib/combined/node/ResourceNode.java
	src/main/java/se/intem/web/taglib/combined/node/TreeBuilder.java
Fix bug with printing tree where node requires itself.